Overview of Q48T25020 DC-DC Converter
The Q48T25020 DC-DC Converter is a high-performance, through-hole mounted converter that operates in the industry-standard quarter brick format. It boasts a broad input voltage range of 36-75 VDC and delivers an output of 2.0 VDC at up to 25A. Designed primarily for telecommunications applications, this converter offers exceptional thermal performance that surpasses quarter bricks and matches half bricks due to its low body profile and omission of heat sinks, which minimizes airflow shadowing and enhances cooling.
Features and Benefits
The converter has a low profile (0.28 inches, or 7.2mm) and light weight (28g typical) for space-sensitive design requirements, and it adheres to an industry-standard footprint (1.45″ x 2.30″) and pinout. It is also RoHS compliant, with lead-free solder options available. The unit does not require a heat sink or a minimum load to operate. Efficiency is high at 85.5% for both 25A and 12.5A loads. The Q48T25020 Converter supports start-up into pre-biased loads and provides fixed-frequency operation, onboard LC input filter, and full protection features with remote output sensing and an adjustable output voltage trim.
Protection and Certification
Protection features include over-voltage, over-temperature (with auto-restart), and under-voltage lockout. The converter has a high MTBF (mean time between failures) of 2.6 million hours, adheres to basic insulation requirements of EN60950, and can withstand a 100V input transient for 100ms. Certifications include UL 60950 recognition in the U.S. & Canada, as well as DEMKO certification per IEC/EN 60950.
Electrical Specifications
The device’s absolute maximum ratings encompass up to 85 VDC input and operating temperatures from -55°C to 125°C. Its operational input voltage ranges from 33 to 75 VDC, with specific thresholds set for under-voltage lockout. Output characteristics include a current range of 0 to 25A with non-latching current limits and short-circuit protections. Feature characteristics cover a wide array including output over-voltage and over-temperature shutdown, remote sense compensation, a switching frequency of 230 to 435 kHz, and options for positive or negative logic ON/OFF control.
Applications
Suitable applications for the Q48T25020 Converter include telecommunications, data communications, wireless infrastructure, and server systems, making it a versatile solution for a variety of high-density power requirements.
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